Lubrication analysis of hydrodynamic-static hybrid bearing with deep-shallow chambers considering thermal conduction

IF 0.6 4区 工程技术 Q4 MECHANICS
Mechanika Pub Date : 2023-08-09 DOI:10.5755/j02.mech.33196
Qianwen Huang, Zeyu Zhao, Huai-Zhen Liu
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引用次数: 0

Abstract

The oil film separates the shaft-bearing system to reduce the frictional force of contact surfaces with large temperature variations owing to thermal conduction. Multiple impact factors seriously affected the lubrication behavior of the bearing during actual working process. An applicable model regarding the lubrication analysis of a hydrodynamic-static hybrid bearing with deep-shallow chambers is proposed and validated with published literature. The lubrication behavior includes film pressure, load capacity, bearing stiffness and flow rate is numerically calculated with centered finite difference method by solving the Reynolds equation. The influence of film thickness and working temperature are considered, over a range of eccentricity ratio. Moreover, the temperature variation caused by thermal conduction is analyzed in details. To investigate the influence of thermal conduction on the lubrication behavior, the results show that the load capacity, bearing stiffness, friction power, and flow power significantly decline with the consideration of thermal conduction. This study proposes an accurate model that is helpful for the design of hydrodynamic-static hybrid bearings with deep-shallow chambers under low rotational speed, heavy load, and high temperature conditions.
考虑热传导的深浅腔动静压混合轴承润滑分析
油膜分离轴-轴承系统,以减少由于热传导而产生的大温度变化接触面的摩擦力。在实际工作过程中,多种影响因素严重影响了轴承的润滑性能。提出了一种适用于深浅腔动静压混合轴承润滑分析的模型,并用已发表的文献进行了验证。通过求解雷诺方程,采用中心有限差分法对膜压力、承载能力、承载刚度和流量等润滑特性进行了数值计算。在一定的偏心比范围内,考虑了膜厚和工作温度的影响。此外,还详细分析了热传导引起的温度变化。为了研究热传导对润滑性能的影响,结果表明:考虑热传导后,承载能力、承载刚度、摩擦功率和流动功率显著下降。该研究为低转速、重载、高温工况下深浅腔动静压混合轴承的设计提供了准确的模型。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Mechanika
Mechanika 物理-力学
CiteScore
1.30
自引率
0.00%
发文量
50
审稿时长
3 months
期刊介绍: The journal is publishing scientific papers dealing with the following problems: Mechanics of Solid Bodies; Mechanics of Fluids and Gases; Dynamics of Mechanical Systems; Design and Optimization of Mechanical Systems; Mechanical Technologies.
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